We have developed an imaging system for the detection and
visualization of methane gas leaks. The system is based on a distributed feedback
InGaAs laser diode emitting at 1.65μm, the beam from which is directed ...

We have developed an open-path hand-held gas detector incorporating a distributed feedback InGaAs laser diode at 1.65 µm. Incorporated into a hand-held transceiver unit, the emitted laser beam is backscattered from nearby ...